* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

#canvas {
  width: 100%;
  height: 100%;
  display: block;
  overflow: hidden;

}

/*@media (max-width: 500px) {*/
/*  #canvas {*/
/*    max-width: 500px;*/
/*    height: auto;*/
/*    display: inline-block;*/
/*    overflow: hidden;*/

/*  }*/
/*}*/
